Ventilating apparatus.



Pa'tented Dec. 2, 19112. H. KRDDER.

VENTILATING APPARATUS.

, Application filed Aug. 4. 1902.) (No modem INVENTOR,

ATTORNEYS:

LATENT FFICE,

HENRY KRODER, OF PASSAIG, NEW JERSEY.

VENTILATING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 714,714, dated December 2, 1902.

Application filed August 4, 1902. Serial No. 118,205. (No model.)

To all whom it may concern:

Be it known that I, HENRY KRODER, a citizen of the United States, residing in Passaic, in the county of Passaic and State of New Jersey, have invented certain new and useful Improvements in Ventilating Apparatus; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

This invention relates to ventilating apparatus for factories, greenhouses, and the like; and it has reference particularly to that por tion of such an apparatus whereby the adjusting of the hinged or pivoted sashes or other similar parts of the building is effected. In mechanisms of this nature it is the object to have them work easily and reliably, be capable of a considerably varied adjustment, be warranted to hold the sashes positively and secure at the position to which they are adjusted, and be as simple and inexpensive in construction as practicable. My invention therefore aims to accomplish all this in a perfect and thorough manner.

The invention consists in an improved mechanism whereby the adjusting of the sashes or other similar parts of a ventilating or other similar apparatus is effected.

The invention will be found fully illustrated in the accompanying drawings, wherein Figure 1 is a side view of the mechanism,

a portion thereof being shown in section. Fig.

- vention.

2 is a front view of the operating mechanism proper, a portion being herein also shown in section.. Fig. 3 illustrates a detail of thein- Fig. 4 shows the invention as applied in the ventilating apparatus of a mill or other similar building, and Fig. 5 shows the apparatus as preferably applied to a greenhouse.

In saidvdrawings, a, is the building, and b the sashes. The latter are shown as pivoted; but it is not, of course, essential that they be so mounted. To each sash is suitably connected a rack c. A shaft runs along the building, which, being marked 61 on the drawings, is revolubly mounted in suitable bearings e, and on this shaft is secured a series of pinions f, each pinion being preferably of the form illustrated in Figs. 3 and 4 of the drawings. One rack 0 extends over and meshes with each corresponding pinion. In order to prevent the rack jumping off the pinion, a pair of. shackles 72 is loosely arranged on the shaft, their upper ends being joined by a bolt h, which extends over the rack and is preferably provided with an antifriotionroller i, against which the back of the rack may bear. To guide the rack true and avoid undue lateral movement, a washerj may be employed to keep the rack up against the body portion of the pinion.

7c is a revoluble shaft, which is mounted in convenient reach of the operator in some suitable support, one form of which will be hereinafter particularly described. This shaft carrise a sprocket Z, and over this sprocket and another sprocket m,which is fixed on the shaft 01, extends a chain it, whereby motion is transmitted from the one shaft to the other. On the shaft 75 isalso secured a crank 0, which is provided with a spindle p at its free end, carrying a fixed handle or grip g. In the crank is fulcru med a pawl r, having one end formed as a fork and normally pressed outwardly by a suitable spring 5, coiled about a pin t and having its spreading ends interposed between the pawl and the crank.

it is an an n ularly-grooved block which is arranged to slide longitudinally on the spindle between the grip and crank and which receives in its groove the forked portion of the pawl. In the ferrule portion 1; of the grip is fulcrumed a pair of levers to, which are suitably curved, so as to bring one end of each diametrically opposite the other rela tively to the grip q. The other end of each lever is connected with a block a by a link w. The free end of the pawl is adapted to lock the crank at a variety of positions, and to this end a rigid part y, having a series of notches arranged about the shaft 7t, is provided, the notches being adapted to receive said end of the pawl.

The supporting structure for the shaft 7.: shown in the drawings consists of two members z and 1, whose body portions, by means of bolts 2, are clamped securely to a suitable stanchion 3, forming a portion of the building, and which are at one end formed with bearings for said shaft. One of them comprises the rigid notched part y,above referred to. Though this form of supporting structure for the shaft 76 is the preferred one, especially where there is a part such as the stanchion to sustain it, I am not limited to the use of such a support. For instance, where the supporting structure is to be secured to the side of a building its form may be changed to suit the circumstances.

By rotating the crank 0 after pressing together the levers w, so that though the links and the block the pawl will be disengaged from the notched part 'y, the various sashes which are controlled from the shaft of may be adjusted at will, and it will be understood that by providing additional shafts (Z and pinions and racks for connecting them with the sashes any number of tiers of sashes may be operated from the one crank, proper connection between the several shafts being effected by multiplying the sprockets and chains.

Having thus fully described myinvention, whatI claim, and desire to secure by Letters Patent, is

1. In a ventilating apparatus, the combination of the element to be adjusted, a rotary part carrying a crank, a suitable support for said rotary part, operative connecting means between said rotary part and the part to be adjusted, a fixed part havinga series of notches, a pawl carried by the crank portion of said rotary part and adapted to engage said notches at one end, a spindle carried by said crank, and a sliding block on the spindle engaged by the other end of said pawl, substantially as described.

2. In a ventilating apparatus, the combination of the element to be adjusted, a rotary part carrying a crank, a suitable support for said rotary part, operative connecting means between said rotary part and the part to be adj usted, a fixed part having a series of notches, a pawl carried by the crank portion of said rotary part and adapted to engage said notches at one end, a spindle carried by said crank, a sliding block on the spindle engaged by the other end of said pawl, and levers adapted to effect the movement of said block, substan tially as described.

3. In a ventilating apparatus, the combination of the part to be adjusted, a rotary shaft, a pinion secured on said shaft, said pinion comprising a disk-like body part and pins projecting laterally from said body part, a rack secured to said part to be adjusted and extending over said pinion and engaging the pins thereof, shackles arranged loosely on said shaft, a bolt extending over said rack and joining the shackles, a roller disposed on said bolt over the rack,and a washer arranged on said bolt adjacent that shackle toward which said pins project, said washer being adapted to coact with the body portion of said pinion to guide the rack true, substantially as described.

In testimony that I claim the foregoing I have hereunto set my hand this 16th day of July, 1902.

HENRY KRODER.

Witnesses:

JOHN W. STEWARD,

JAMES BHEMTON. 

